books.google.com - Ten thousand years ago, our species made a radical shift in its way of life: We became farmers rather than hunter-gatherers. Although this decision propelled us into the modern world, renowned geneticist and anthropologist Spencer Wells demonstrates that such a dramatic change in lifestyle had a downside...http://books.google.com/books/about/Pandora_s_Seed.html?id=3JmF7JAtIX8C&q=pattern&utm_source=gb-gplus-sharePandora's Seed